It may be more famous now than any time in its 1,300-year history as the setting of “Downton Abbey,” but England’s Highclere Castle has its own stories to tell on Secrets of Highclere Castle at 7 pm Sunday

Masterpiece Classic at 8 pm Sunday and 8 pm Saturday presents the long-awaited premiere of Downton Abbey, Series III. The Great War is over and the long-awaited engagement of Lady Mary and Matthew is on, but all is not tranquil at Downton Abbey as wrenching social changes, romantic intrigues, and personal crises grip the majestic English country estate.

POV at 9 pm Monday presents “Reportero”, a film that follows a veteran reporter and his colleagues at Zeta, a Tijuana-based independent newsweekly, as they stubbornly ply their trade in one of the deadliest places in the world for members of the media.

Something Ventured at 10 pm Monday tells the story of the creation of an industry that went on to become the single greatest engine of innovation and economic growth in the 20th century.

History Detectives at 7 pm Tuesday tells four stories of our nation’s beginnings, ranging from analyzing the simple bill of sale for a 17-year old “negro girl” to figuring out what role a handwritten score played in making “The Star Spangled Banner” our national anthem.

Part one of Abolitionists: American Experience at 8 pm Tuesday explores the shared beliefs about slavery that brought together prolific figures like Fredrick Douglass, Angelina Grimke, William Lloyd Garrison, and Harriet Beecher Stowe.

Frontline at 9 pm Tuesday examines the legacy of Michelle Rhee, the former chancellor of Washington, D.C. public schools who attempted to fix a broken school system during her tumultuous three-year tenure.

Nature at 7 pm Wednesday explores Cuba’s varied landscape, which in the heart of the Caribbean and its longstanding place at the center of Cold War politics have all combined to preserve some of the richest and most unusual natural environments of the hemisphere, in “Cuba: The Accidental Eden”.

NOVA at 8 pm Wednesday attempts to decode recent scientific analysis stating that modern humans had interbred with Neanderthals in “Decoding Neanderthals.”

Life on Fire at 9 pm Wednesday explores the career of volcanologists, whose job it is to use their tools and knowledge to try to protect those who live beneath the Earth’s fire, in “Volcano Doctors.”

Jack White performs tracks from his debut solo album Blunderbuss on Austin City Limits at 10 pm Wednesday and Friday.

Author David Maraniss discusses his career and newest book on Overheard with Evan Smith 7 pm Thursday.

On Mind of a Chef at 8 pm Thursday, David Chang hangs out with one of his best friends, Rene Redzepi – who happens to be the world’s top chef.

Chet heads to Bay Area Houston to visit NASA on The Daytripper at 8:30 pm Thursday.

Barnes Collection at 9 pm Friday uses the relocation and renaissance of the Barnes Foundation as a vehicle for telling the story of the quirky, quarrelsome, question mark of a man, Dr. Albert C. Barnes and his astounding art collection.

Find out how to grow your own fruit trees and berries on Central Texas Gardener at noon Saturday.